12 Inch Professional Audio MID Bass Woofer Speaker for PRO Audio

• Noise: <95dB
• Hi-Fi: Not Hi-Fi
• Activity: Passive
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: HDW-12403
• Operation Mode: Wire / Remote Control
• Speaker System: Mono
• Speaker Material: Metal
• Application: Commercial, Home, Stage, Theater
• Monitor: None
• THD: <0.005%
• Sensitivity: 97 dB
• Voice Coil Diameter: 3 Inch
• Frequency Range: 38-2.2K Hz
• Type: Woofer Speaker
• Magnet: Ferrite 180
• Transport Package: by Export Carton
• Specification: Net Weight: 6.5KG
• Trademark: HD
• Origin: Guangzhou, China
• HS Code: 851829000
• Production Capacity: 5000 Pieces/Month
• Package Size: 33.00cm * 33.00cm * 20.00cm
• Package Gross Weight: 8.000kg

Product Description

12 inch powerful professional audio mid bass woofer speaker for pro audio 

       

 

General Specifications
Nominal Diameter	300/12	mm/inch
Rated Impedance	8	ohm
Nominal Power handling	350	Watts
Program Power	700	Watts
Sensitivity(lw/lm)	97	dB
Frequency Range	38.7-2.2K	Hz
Minimum Impedance(Zmin)	5.6	ohm
Voice Coil Diameter	75	mm/inch
Voice Coil Material	Aluminium
Number of layers	2
Magnet gap depth	12	mm
Surround Shape	M-roll
Basket	Cast Aluminium
Magnet	180 Ferrite
Mounting Information
Overall Diameter	313	mm
Bolt Circle Diameter	295	mm
Baffle Cutout Diameter	287	mm
Overall Depth	147	mm
Net Weight	6.5	kg
Shipping weight	7.2	kg
Shipping Box	320*320*150	mm

Thiele-Small Parameters
Resonance frequency	Fs	38.7	Hz
DC resistance	Re	5.6	ohm
Mechanical factor	Qms	6.77
Electrical factor	Qes	0.37
Total factor	Qts	0.35
Mechanical compliance	Cms	0.23	mm/N
Mechanical resistance	Rms	2.7	mech-ohm
of suspension losses
Effective Moving Mass	Mms	74.5	gr
Half-space efficiency	Eff	1.37	%
BL Factor	BL	16.6	T.m
Equivalent Cas air load	Vas	89.7	liters
Voice-coil inductance	LelK	0.8	mH

INTRODUCTION
Hengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make  different tranducers, compression drivers. We not only provide goods but technology. OEM and ODM are both welcome.